把vbscript翻译成javascript？？
<script Language="vbscript">sub check()
c=document.form1.page.value
if c<>"" then
if not IsNumeric(c) then
msgbox " 页数只能输入数字"
document.form1.page.select()
exit sub
else
end if
else
msgbox"请输入想要转到页数"
document.form1.page.select()
exit sub
end if
document.form1.submit()
end sub
</script>
